The frequency of nip/bite, aggressive posture, and maternal behavior by first generation dam (FGD) prenatal exposure condition on PPD eight. Each bar represents least squares mean (LSM) and standard error (±SEM) for n = 74 untreated (UN), 55 intermittent saline (IS), and 54 intermittent cocaine (IC) dams. As indicated by the asterisks, results indicate a significantly lower frequency of nip/bite in the IC-reared FGDs compared to UN-reared FGDs (p ≤ 0.01), and significantly elevated aggressive posture (p ≤ 0.01) and maternal behavior (p ≤ 0.05) frequency compared to IS-exposed dams.